/**
 * BibSonomy-Webapp - The web application for BibSonomy.
 *
 * Copyright (C) 2006 - 2016 Knowledge & Data Engineering Group,
 *                               University of Kassel, Germany
 *                               http://www.kde.cs.uni-kassel.de/
 *                           Data Mining and Information Retrieval Group,
 *                               University of Würzburg, Germany
 *                               http://www.is.informatik.uni-wuerzburg.de/en/dmir/
 *                           L3S Research Center,
 *                               Leibniz University Hannover, Germany
 *                               http://www.l3s.de/
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
package org.bibsonomy.webapp.view;

import org.springframework.web.context.request.RequestContextHolder;
import org.springframework.web.context.request.ServletRequestAttributes;
import org.springframework.web.servlet.support.RequestContextUtils;

/**
 * a redirect view that can keep attributes
 *
 * @author dzo
 */
public class ExtendedRedirectViewWithAttributes extends ExtendedRedirectView {
	
	/** to transfer errors while redirect */
	public static final String ERRORS_KEY = "errors";
	
	/** the success message key */
	public static final String SUCCESS_MESSAGE_KEY = "successMessageKey";
	
	/**
	 * @param redirectURI
	 */
	public ExtendedRedirectViewWithAttributes(String redirectURI) {
		super(redirectURI);
	}
	
	/**
	 * adds an attribute to the redirect view
	 * @param key
	 * @param value
	 */
	public void addAttribute(final String key, final Object value) {
		final ServletRequestAttributes requestAttributes = (ServletRequestAttributes) RequestContextHolder.getRequestAttributes();
		RequestContextUtils.getOutputFlashMap(requestAttributes.getRequest()).put(key, value);
	}
}
